Mini split systems offer flexible cooling and heating for zones and upgrades, but they come with notable drawbacks. This guide highlights common disadvantages and helps buyers choose the right unit based on space, climate, and budget. Ideal buyers include homeowners upgrading single rooms, rooms without existing ductwork, or small offices seeking energy efficiency. Below is a quick summary of five relevant models to consider.
| Product | Approx. BTU | Best For | Key Limitation |
|---|---|---|---|
| Rellytech 18,000 BTU | 18,000 BTU | Large living spaces, multi-room cooling | Higher upfront cost and installation effort |
| Rellytech 9,000 BTU | 9,000 BTU | Bedrooms and small rooms | Smaller coverage, may need multiple zones |
| EXNOS 12,000 BTU | 12,000 BTU | Medium rooms, offices | Smart modes optional; quiet operation varies by model |
| GarveeHome 18,000 BTU | 18,000 BTU | Versatile setups, garages | Installation complexity and noise depends on setup |
| Albott 20,000 BTU | 20,000 BTU | Two-zone or larger spaces | Higher energy use if not balanced with usage |
Rellytech 18,000 BTU Mini Split System
Key features: 18,000 Btu cooling and 18,400 Btu heating; covers up to 1,250 sq. ft. Includes four modes and Eco setting; adjustable airflow with a 90° swing. Best for: small-to-mid sized homes seeking year-round comfort in a single zone. Limitation: upfront cost and professional installation are typically needed, which can be a barrier for some budgets.
Why chosen: This model offers strong cooling/heating capacity for larger spaces and a broad coverage area, making it a reference point for performance in high-efficiency configurations. Caution: Ensure electrical work and refrigerant charging are compliant with local codes.
Rellytech 9,000 BTU Mini Split System
Key features: 9,000 Btu cooling and heating; suitable for up to 550 sq. ft. Four modes plus Eco setting; 90° vertical swing for broader coverage. Best for: bedrooms, small living rooms, or home offices where space is limited. Limitation: lower BTU output may require a second unit for larger rooms.
Why chosen: This unit demonstrates efficient operation in compact spaces and provides a good reference for smaller-area cooling/heating in single-room applications. Caution: In very hot climates, smaller units may experience higher runtime to maintain comfort.
Rellytech 12,000 BTU Mini Split System
Key features: 12,000 BTU cooling/heating; up to 750 sq. ft. Four modes; Eco function; 90° vertical swing. Best for: mid-sized living spaces and home offices needing consistent climate control. Limitation: may require multi-zone configuration for larger open plans.
Why chosen: This unit balances power and efficiency for medium spaces, offering flexible operation. Caution: Verify installation space can accommodate wall-mounted indoor units and line-set routing.
EXNOS 12,000 BTU Mini Split
Key features: 12,000 BTU cooling and 12,500 BTU heating; up to 750 sq. ft.; 19 SEER2; ECO mode reduces energy use; quiet sleep mode as low as 26dB. Best for: bedrooms or nurseries needing quiet operation and energy efficiency. Limitation: energy-savings depend on correct commissioning and usage patterns.
Why chosen: Demonstrates high efficiency and low noise options, which are important for spaces prioritizing sleep quality. Caution: Performance depends on proper airflow and room sealing to maximize efficiency.
GarveeHome 18,000 BTU Mini Split
Key features: 18,000 BTU capacity; 5 modes; self-diagnosis/defrost; 24-hour timer; sleep and energy-saving modes; noise below 42 dB in some setups. Best for: versatile installations across larger rooms or multi-use spaces. Limitation: higher-capacity units may require more substantial electrical and structural considerations during install.
Why chosen: Represents robust all-in-one capability with multiple controls and scheduling options for varied daily use. Caution: Silent performance depends on proper mounting and refrigerant charge; verify line-set routing requirements.
Albott 20,000 BTU Mini Split System
Key features: 20,000 BTU, up to two zones; 25 SEER2 efficiency; inverter technology; WiFi-enabled; pre-charged condenser with 16.4 ft line set. Best for: two-room or larger open-plan spaces needing separate temperature zones. Limitation: higher upfront cost and more complex installation for multi-zone setups.
Why chosen: Demonstrates multi-zone potential and high efficiency, useful for larger homes. Caution: WiFi features require compatible network setup and app control for optimal use.
Buying Guide: Key Considerations For Mini Split Systems
- Room size and zoning: Match BTU capacity to the space and plan for independent indoor units if multiple zones are needed.
- Climate and heating needs: Inverter-based systems handle variable loads well, but extreme climates may require higher capacities or backup options.
- Energy efficiency: Look for SEER2/HSPF2 ratings and ECO modes to minimize consumption, especially for rooms used frequently.
- Installation requirements: Ductless systems need proper outdoor condenser location, electrical work, and refrigerant charging by a licensed tech.
- Noise and comfort: Consider indoor unit decibel levels and sleep modes for bedrooms or nurseries.
- Maintenance: Self-diagnosis features help, but regular cleaning and filter upkeep are essential for long-term performance.
- Cost considerations: While operating costs may be lower than central HVAC in some scenarios, installation complexity can raise the initial investment.
Frequently Asked Questions
- Do mini splits require a lot of maintenance? Yes, regular filter cleaning and periodic system checks help maintain efficiency and longevity.
- Are mini splits suitable for large, open-plan homes? They can be, especially with multiple zones, but may require more units and professional design for even cooling.
- Will a mini split work in extremely cold climates? Some models offer reliable heating down to low temperatures, but performance varies by unit and climate.
- Is installation difficult? Yes, professional installation ensures correct refrigerant charging, electrical work, and proper drainage for outdoor components.
- Can I install a mini split myself? DIY installation is possible with some pre-charged or DIY kits, but many systems require licensed technicians for safety and compliance.
- How do I choose between single-zone and multi-zone systems? Consider room count, usage patterns, and whether simultaneous control of different areas is needed.
